Yb nayon publishing (153 risultati)

Paperback. Condizione: new. Paperback. Why can we breathe on Earth but not on Mars? Why do we have four seasons? Why is our planet covered in water when others are bone dry? And what would happen to all life on Earth if the Sun were just a little closer or a little farther away?Why Is Earth Special? answers all these questions and more, taking young readers on a fascinating journey of discovery through the science of our extraordinary home planet. Written in clear, simple language with large easy-to-read text, short chapters, and a fun fact on every topic, this book is perfect for early readers in grades K through 3 who are curious about the world around them.Thirteen engaging chapters cover everything that makes Earth unique: The Goldilocks Zone - why Earth sits at exactly the right distance from the Sun, not too hot and not too cold, to allow liquid water and life to exist. The other planets in the solar system are either too close to the Sun and scorching hot, or too far away and frozen solid. Earth is in the perfect position, just like the porridge in the story of Goldilocks.Water - why liquid water is the most precious thing about our planet, how the water cycle works, how oceans distribute heat around the world, and why every living thing on Earth depends on water to survive. Earth is the only planet in the solar system where water exists on the surface as a liquid ocean.The atmosphere - the thin layer of air that gives us oxygen to breathe, protects us from harmful radiation, destroys most space rocks before they hit the ground, and keeps our planet warm enough for life. Without our atmosphere, Earth would be a frozen, lifeless rock.Earth's invisible magnetic shield - the powerful magnetic field generated by our planet's liquid iron core that protects us from the dangerous particles of the solar wind. Without this shield, the solar wind would gradually strip away our atmosphere, just as it did on Mars billions of years ago. The northern and southern lights, or auroras, are the beautiful by-product of this invisible protection.Seasons and the reason for them - why Earth's 23.5-degree tilt gives us four wonderful seasons, how animals migrate and hibernate to cope with seasonal changes, and why some places on Earth have very long days or nights at certain times of year.Day and night - how Earth's 24-hour spin creates the rhythm of daylight and darkness that every living thing on our planet is tuned to, and why people experience jet lag when they travel between different time zones.Plate tectonics - how Earth's surface is made of giant moving pieces that build mountains, cause earthquakes, create volcanoes, and recycle the crust in a way no other planet in the solar system does.The Moon's special role - how the Moon creates our ocean tides, stabilizes Earth's tilt to give us regular seasons, slowed Earth's spin to give us our 24-hour day, and creates the spectacular total solar eclipses that are unique to Earth in the entire solar system.A comparison with other planets - a side-by-side look at how Earth compares with Mercury, Venus, and Mars, and why every planet falls short of Earth's remarkable combination of features that make it perfect for life.And finally, how we can all take care of this extraordinary planet that is unlike anything else we have ever found in the universe.Every chapter ends with a star-marked FUN FACT that will amaze young readers and give them something exciting to share with their family and friends. A full glossary of 18 key science words is included at the back of the book.Perfect for: Early readers ages 5 to 8 in grades K-3. Classroom read-alouds and homeschool science lessons. Gift buyers looking for an educational space book that children will genuinely love. Any child who has ever looked at the sky and wond Shipping may be from multiple locations in the US or from the UK, depending on stock availability. …

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: new. Paperback. On April 10, 2019, six press conferences held simultaneously on four continents revealed a single photograph to the world. It showed a dark circle surrounded by a glowing ring of orange fire. It was blurry, asymmetric, and completely extraordinary. It was the first photograph of a black hole - taken by a telescope the size of the Earth.This is the complete story of how that photograph was made.Seeing the Invisible is the most comprehensive adult-level account of the Event Horizon Telescope project ever written. From the physics of why black holes are invisible to the engineering miracle of synchronizing eight telescopes across six continents, from the petabytes of data shipped on hard drives from the South Pole to the algorithms that turned radio signals into a historic image - every dimension of this extraordinary scientific achievement is explained in full depth.What makes this book different from every other account: Most popular books about black holes describe what black holes are. This book answers a completely different and equally fascinating question: How did human beings actually manage to photograph one? The answer involves a century of radio astronomy, extraordinary precision engineering, international scientific collaboration on an unprecedented scale, some of the most sophisticated mathematical algorithms ever applied to an astronomical problem.Across fifteen deeply expanded chapters, you will understand: Why a single telescope could never resolve a black hole shadow, and why the angular size of the M87 black hole is equivalent to seeing a golf ball on the surface of the Moon from Earth. The complete history of radio astronomy from Karl Jansky's accidental 1932 discovery of cosmic radio waves through the invention of very-long-baseline interferometry and its progressive extension to millimeter wavelengths. Why only two black holes in the entire observable universe, M87 and Sagittarius A*, are large enough and close enough to Earth for their shadows to be resolvable with an Earth-diameter baseline. How the EHT array was assembled from eight existing telescope sites at locations including the Atacama Desert in Chile, the summit of Mauna Kea in Hawaii, the Spanish Sierra Nevada, and the South Pole - and why each site was chosen. What the April 2017 eight-day observing campaign actually involved: nanosecond synchronization with hydrogen maser atomic clocks, data recorded at 32 gigabits per second, five petabytes of raw data too large to transmit over any internet connection and shipped physically on hard drives across the world. The four independent imaging teams and the algorithms they used, including the CHIRP method developed by Katie Bouman as part of her MIT doctoral research, why four independent approaches were required before any image was accepted as reliable. What the final M87 image actually shows: the photon ring shadow as evidence of the event horizon, the brightness asymmetry as evidence of Doppler boosting from the orbiting accretion plasma, and the precise measurement of the black hole mass from the shadow angular diameter. How the Sagittarius A* image, released three years later in 2022, required completely new imaging algorithms to handle the rapid variability of a source whose accretion flow changes on timescales of only minutes. The polarimetric observations that revealed the magnetic field structure near M87's event horizon for the first time, No prior background in radio astronomy or physics is required, but no important idea is simplified beyond recognition. The Rayleigh criterion, closure phases, GRMHD simulations, the Fourier plane, aperture synthesis, interstellar scattering - all are explained from first principles, with the depth and precision that this landmark achievement deserves.If you want Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condizione: new. Paperback. Imagine a planet so big that more than 1,300 Earths could fit inside it. A planet with a storm that has been raging for over 350 years. A planet with 95 moons, one of which might have an ocean with more water than all of Earth's oceans combined. That planet is Jupiter - and this book tells the whole amazing story.The Biggest Planet of All takes young readers on a thrilling journey to Jupiter, the largest and most dramatic planet in the solar system. Written in clear, simple language with large easy-to-read text, short chapters, and a fun fact on every topic, this book is the perfect introduction to the king of the planets for children in grades K through 3.Thirteen exciting chapters reveal everything about Jupiter: How Jupiter got so big - and just how enormous it really is. Jupiter has 318 times the mass of Earth and is bigger than all the other planets in the solar system combined. Scientists call it a gas giant because it has no solid surface at all. If you tried to land on Jupiter, you would just sink deeper and deeper into its thick swirling layers of gas until the pressure crushed you. Jupiter is not like any planet we have ever known.The Great Red Spot - the most famous storm in the solar system. This enormous swirling hurricane has been raging in Jupiter's atmosphere for at least 350 years. For most of that time, two or three Earths could have fit inside it side by side. Scientists are watching it carefully because it has been slowly shrinking, and nobody knows exactly why or what will happen next.Jupiter's extraordinary moons - a complete family of at least 95 worlds. The four largest moons were discovered by the scientist Galileo in 1610, more than 400 years ago, using one of the first telescopes ever made. Each of these four Galilean moons is a world with its own remarkable story.Jupiter's gravity constantly squeezes and heats Io's interior, keeping it in a state of constant volcanic fury. The colorful sulfur from its eruptions paints the surface in brilliant yellows, reds, oranges, and whites.Europa - the ocean world that might harbor life. Beneath Europa's cracked icy surface lies a vast liquid water ocean that scientists believe contains twice as much water as all of Earth's oceans. Where there is liquid water, there might be life. NASA has launched the Europa Clipper spacecraft specifically to explore this extraordinary moon.Ganymede - the largest moon in the entire solar system, even bigger than the planet Mercury. Ganymede has its own magnetic field, the only moon in the solar system known to generate one. And Callisto - the most heavily cratered object in the solar system, with ancient impact scars that tell the story of billions of years of solar system history.How Jupiter protects Earth The spacecraft that have explored Jupiter - from the first close-up photographs taken by Pioneer 10 in 1973, to the extraordinary discoveries of Voyager 1 and Voyager 2, to the Galileo spacecraft that orbited Jupiter for eight years, to the Juno mission that is studying Jupiter right now from close orbit. Space exploration has completely transformed our understanding of this giant planet.Every chapter ends with a star-marked FUN FACT that will surprise and delight young readers and give them something exciting to share with family and friends. A full glossary of 18 key science words is included at the back of the book.Perfect for: Early readers ages 5 to 8 in grades K-3. Parents and teachers looking for a simple, engaging introduction to the solar system's most dramatic planet. Gift buyers looking for a space book that children will genuinely love to read and re-read. Any child who has ever looked up at a bright star in the night sky and wondered what it really is.The biggest planet in the solar system Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: new. Paperback. Did you know that the asteroid belt between Mars and Jupiter ismostly empty space - so empty that every spacecraft we have ever sentthrough it has passed safely without hitting a single rock? Thatmeteorites falling to Earth carry amino acids, the building blocks oflife, that formed in space billions of years ago? That in September 2022, humanity deliberately crashed a spacecraft into an asteroid andsuccessfully changed its orbit for the first time in history? And thatthe dinosaurs were wiped out by an asteroid impact - but that sameimpact may have eventually led to the rise of humans? Inside this book, readers will discover: The Real Asteroid Belt - Why the densely packed asteroidfields of science fiction movies are completely wrong, how empty thereal belt actually is, and why it still matters enormously as ascientific treasure chest from the solar system's earliest historyCeres: The Dwarf Planet - The largest object in the asteroidbelt and the only dwarf planet in the inner solar system, revealed byNASA's Dawn spacecraft to have mysterious bright spots of sodiumcarbonate salt, evidence of a subsurface ocean, and a cryovolcanicdome that formed within the past 200 million yearsVesta: A Planetary Embryo - The second largest asteroid, adifferentiated world with an iron core, a basaltic crust, and twoenormous ancient impact craters covering most of its southernhemisphere, connected to the HED meteorites that rain down on EarthHow the Belt Formed - Why no planet ever formed betweenMars and Jupiter, the role of Jupiter's gravity in disrupting planetformation, the dramatic Grand Tack hypothesis in which Jupiter migratedinward through the solar system and back, and how this migration mayhave delivered Earth's waterNear-Earth Asteroids - The thousands of asteroids withorbits that bring them close to Earth, how they escape from the mainbelt through gravitational resonances, and the famous Apophis asteroidwhose discovery briefly suggested a 2.7 percent chance of hitting Earthin 2029 Meteorites - How pieces of asteroids travel from the beltto Earth over millions of years, the different types of meteorites andwhat they reveal about their parent bodies, why Antarctica is the bestplace on Earth to find meteorites, and what the amino acids incarbonaceous chondrites tell us about the origin of lifeAsteroid Mining - The staggering mineral wealth containedin metallic asteroids, why water is actually the most immediatelyvaluable asteroid resource for space exploration, the technicalchallenges of mining in near-zero gravity, and the commercial companiesand government programs already developing plans for asteroid resourceutilization Every chapter ends with a Did You Know? feature packed withextraordinary facts, and the book includes a comprehensive 31-termglossary of asteroid and planetary science vocabulary. Perfect for: Middle grade students ages 8 to 12 in grades 3through 7. School science projects and reports on asteroids, the solarsystem, space exploration, planetary defense, and the origin of life.Teachers and homeschool educators. Science fair projects. Any youngreader fascinated by space rocks, ancient catastrophes, and humanity'splan to defend Earth from asteroid impacts. The rocky middle ground of the solar system shaped Earth's pastand may determine its future. This book tells the complete s Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: new. Paperback. At the exact center of the Milky Way, 26,000 light-years from Earth, sits one of the most extraordinary objects in the universe. It is four million times more massive than the Sun. It fits inside a sphere smaller than the orbit of Mercury. And in 2022, for the first time in history, it was photographed.Its name is Sagittarius A*. This book is its complete story.Sagittarius A* is the most comprehensive adult-level account of the supermassive black hole at the center of our galaxy ever written. Fifteen deeply expanded chapters trace everything known about this object: from its accidental first detection as an anomalous radio signal in the 1930s through the two-decade stellar orbit campaigns that earned the 2020 Nobel Prize in Physics, through the extraordinary 2022 Event Horizon Telescope photograph, through the relativistic effects being detected in real time in the orbits of the S-stars, through the accretion physics that makes it one of the quietest supermassive black holes in the observable universe, all the way to the future observational program that will characterize galactic center science for the next generation.This is the only book dedicated entirely to Sagittarius A at this depth.*Across fifteen chapters, you will understand: The complete history of how Sagittarius A* was discovered: from Karl Jansky's accidental radio detection in 1931, to Harlow Shapley's first correct estimate of the galactic center direction, to the naming of Sagittarius A* by Robert Brown in 1982, to the first detection of high stellar velocities that pointed unmistakably to an enormous concentration of mass, to the Nobel Prize-winning orbital campaigns of Reinhard Genzel and Andrea Ghez that built the case for a supermassive black hole to mathematical certainty over twenty-five years of painstaking observations.The anatomy of the black hole itself: how its mass of 4.297 million solar masses has been measured to better than 0.3 percent precision through Keplerian orbital mechanics, what the Schwarzschild radius of 12.7 million kilometers means physically, and how the spin parameter of Sagittarius A* is being progressively constrained through photon ring morphology and stellar orbital precession measurements.The 2022 Event Horizon Telescope image: what it actually shows and what it proves, why imaging Sagittarius A* was technically harder than imaging M87 despite its closer proximity, how the interstellar scattering correction was achieved, what the photon ring angular diameter tells us about the black hole mass, and how the image compares with the M87 photograph to confirm that the photon ring structure is a universal prediction of general relativity rather than an artifact of either specific system. The young star paradox: why the massive blue O and B stars orbiting within half a light-year of Sagittarius A* should not be there according to standard star formation theory, what the disk instability and Hills mechanism models propose as explanations, how hypervelocity stars in the galactic halo provide indirect evidence for the Hills mechanism, and what the G2 cloud encounter with the black hole in 2014 taught us about the limits of our theoretical models.The future: how the Extremely Large Telescopes will find shorter-period S-stars to measure the Lense-Thirring frame dragging and test the no-hair theorem, how the expanded Event Horizon Telescope will produce movies of the accretion flow, how LISA will detect extreme mass ratio inspirals of stellar black holes into Sagittarius A*, how the Square Kilometre Array is hunting for the galactic center pulsar that would be the most powerful relativistic probe ever found, and why Sagittarius A* will remain the cornerstone of black hole physics for as long as observational astronomy exists. This item is prin Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Paperback. Condizione: new. Paperback. On September 14, 2015, at 5:51 in the morning, two detectors in Louisiana and Washington State registered a disturbance in spacetime itself. The signal lasted less than a second. It had traveled more than a billion light-years. And it changed science forever.The detection of gravitational waves by LIGO was not merely a new discovery within existing astronomy. It was the opening of an entirely new observational window on the universe - a new sense, as fundamental as the difference between hearing and seeing, that gives science access to events, objects, and epochs that are completely invisible to every telescope ever built. Gravitational Waves: The New Astronomy is the complete adult-level account of this revolution: where it came from, how it works, what it has already revealed, and where it is headed in the next generation of extraordinary instruments.Across fifteen deeply expanded chapters, this book takes you from the first principles of spacetime physics to the scientific frontier: The physics of gravitational waves from the ground up. Gravitational waves are not a new kind of light. They are oscillations in the geometry of spacetime itself, produced whenever a massive object undergoes asymmetric acceleration and propagating outward at the speed of light through all matter without interaction. This book explains what they are, how they are generated, why their two polarization states reflect the spin-2 nature of the graviton, and why the quadrupole formula means that only the most compact, most massive, most rapidly moving systems in the universe produce waves strong enough to detect. The first detection and the chirp that changed astronomy. GW150914 arrived carrying a complete record of two black holes spiraling together at half the speed of light. This book decodes that signal in detail: what the chirp frequency evolution reveals about the component masses, how Bayesian parameter estimation extracts spins and distances and sky locations, what the ringdown quasi-normal modes tell us about the final Kerr black hole, and how the detection confirmed a prediction of general relativity that had been made but never tested in the strong-field regime.The multi-messenger revolution of GW170817. When two neutron stars merged in August 2017 and LIGO detected the gravitational wave signal 1.7 seconds before the Fermi telescope detected the gamma-ray burst, it confirmed in a single observation: the neutron star merger origin of short gamma-ray bursts, the r-process origin of gold and platinum and the heavy elements, that gravitational waves and electromagnetic waves travel at the same speed to fifteen decimal places, the first direct constraint on the nuclear equation of state from tidal deformability, and the first standard siren measurement of the Hubble constant. No single astrophysical event in history has returned so much science in so short a time.Testing general relativity in the strongest fields ever probed. Gravitational wave observations constrain the gravitational wave speed to fifteen decimal places, test the post-Newtonian expansion of the inspiral waveform at every order, measure the quasi-normal mode ringdown spectrum of newly formed Kerr black holes, and provide the most precise strong-field tests of Einstein's theory ever achieved. This is gravitational wave astronomy taken seriously. No important physics is glossed over or reduced to metaphor. The quadrupole formula, the Bogoliubov transformation, the tidal deformability, the parametrized post-Einsteinian framework, the Hellings-Downs curve - all are explained with the depth they deserve, in prose that assumes curiosity and intelligence but not a prior degree in physics. If you want to understand gravitational waves at the level that the science actually operates, t Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.